Knotter attachment for harvesters.



UNiTnn STATES PATENT OFFICE.

DAVIS LEVI TV OLF, OF ARCHER CITY, TEXAS.

MNOTTER ATTACHMENT FOR HARVESTERS SPECIFICATION formingpart of Letters Patent No. 699,360, dated May 6, 1902. Application filed August 17,1901. Serial No- 72,403. (No model.)

To all whom it may concern.-

Be it known that I, DAVIS LEVI l/VOLF, a citizen of the United States,residing at Archer City, in the county of Archer and State of Texas, have invented certain new and useful Improvements in Knotter Attachments for Harvesters; and I do declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in attachments in knotters for harvesting-machines, and comprises a headed wear-block having an oval outlined face which conforms to the curvature of the end of the framein which the kn otter-shaft revolves and provided with a long shank portion which extends through an aperture in the shaftcarrying frame and designed to be held in place by a pin or other suitable means. By the provison of this attachment the efficient life of the frame is greatly lengthened.

My invention is clearly illustrated in the accompanying drawings, which, with the letters of reference marked thereon, form apart of this application, and in which drawings similar letters of reference indicate like parts, in which- Figure 1 is a perspective view of the attachment shown as applied to the head or frame carrying the knotter-shaft. Fig. 2 is a longitudinal sectional view through the attachment and frame carrying same. Fig. 3 is an enlarged detail view of the wear-block or attachment. 7

Reference now being had to the details of the drawings by letter, A designates the frame of the knotter device, which is longi tudinally apertured to receive the knottershaft B, which rotates therein. The knottershaft has secured to or integral with one end thereof the usual rigid arm 0, which is perforated, in which perforation the movable tying-arm D is pivoted. Said arm D has journaled to its end the antifriction-wheel E.

The end of the frame A has a shoulder F on a projecting portion A of the frame, and a longitudinal aperture leads through the frame and opens through said shoulder, as shown. The end of the projecting portion of the frame is rounded, as shown, and the wear-block K,

which has a headed portion K, made, referably, of steel. This wear-block has a shank portion L, which fits in the aperture M 1ongitudinally through the frame parallel to its central longitudinal aperture, in which the knotter -shaft rotates. The head of said block rests upon said shoulder, and its end is oval or rounded and is adapted to be flush with the rounded end of the projection of the frame when the attachment is adjusted in place. When thus attached and held in place by means of a pin or other suitable means, it will be noted that the outer rounded end of the wear-block is located in the path of the wheel carried by the pivoted arm on the knotter-shaft, so that as said shaft and arm rotate the wheel will strike against the head of said block instead of contacting with the frame, which is of a softer metal and which, if it were in the path of the wheel, would soon wear the frame away, rendering it necessary to replace the whole frame. By my attachment it will be observed that the wear-block may be easily removed and replaced by a new one at a comparatively small cost.

The side of the head of the block is flat and rests normally in contact with the face of the projecting portion of the frame, so that said projection reinforces the head as the wheel on the pivoted arm comes in contact there with as the knotter-shaft rotates.

Having thus described my invention, what I claim to be new, and desire to secure by Letters Patent, is-

In an attachment for the frame of a knotter for a harvester, the combination with the frame A, having two longitudinal apertures therein, and provided with a curved projecting portion A at one end thereof, of the shouldered knotter-shaft jonrnaled in one of said apertures, a wear-block K having a shank portion L passing through the other aperture in said frame, said block having two flat faces disposed at an angle to each other, and adapted to contact with the wall of the shouldered portion, and acurved edge on the block designed to be flush with the surface of the projecting portion A, as set forth.

In testimony whereof I hereunto allix my signature in presence of two witnesses.

DAVIS LEVI WOLF. Witnesses:

O. M. SHUFFLER, O. E. GRAHAM.

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